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US 12,418,904 B2Granted
Transmitting and receiving signals using multiple carriers from multiple antenna
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsMiguel Lopez, Dennis Sundman
Life of this patent
Estimating the term…
Abstract
In one example aspect, a method of transmitting signals is provided, the method comprising transmitting signals using one or more first subcarriers only from a first antenna, wherein the signals transmitted from the first antenna comprise first signals based on data, and transmitting signals using one or more second subcarriers different from the one or more first subcarriers only from a second antenna, wherein the signals transmitted from the second antenna comprise second signals based on the data.
Claims19
A method of transmitting signals, the method comprising:
- forming first signals based on data by encoding portions of the data according to a first encoding scheme to form first encoded data, mapping the first encoded data to first symbols according to a first modulation scheme, and performing an inverse discrete Fourier transform and multiplication by a complex waveform on the first symbols to form the first signals;
- forming second signals based on data by encoding portions of the data according to a second encoding scheme to form second encoded data, mapping the second encoded data to second symbols according to a second modulation scheme, and performing an inverse discrete Fourier transform and multiplication by a complex waveform on the second symbols to form the second signals;
- transmitting signals using one or more first subcarriers only from a first antenna, wherein the signals transmitted from the first antenna comprise first signals based on data;
- and
- transmitting signals using one or more second subcarriers different from the one or more first subcarriers only from a second antenna, wherein the signals transmitted from the second antenna comprise second signals based on the data;
- wherein the data comprises one or more data portions;
- wherein the transmitting the signals from the first and second antennas comprises, for each data portion, transmitting at least one first symbol using a respective one of the one or more first subcarriers from the first antenna, and transmitting at least one second symbol using a respective one of the one or more second subcarriers from the second antenna;
- and
- wherein the first symbol and the second symbol are identical.
6 more elements
A method of receiving signals, the method comprising:
- receiving, at a first reception antenna, signals transmitted using one or more first subcarriers only from a first transmission antenna, wherein the signals transmitted from the first transmission antenna comprise first signals based on data;
- and
- receiving, at the first reception antenna, signals transmitted using one or more second subcarriers different from the one or more first subcarriers only from a second transmission antenna, wherein the signals transmitted from the second transmission antenna comprise second signals based on the data;
- receiving, at a second reception antenna, the first signals and the second signals;
- processing the first signals received at the first reception antenna and the first signals received at the second reception antenna as a first single input, multiple output (SIMO) system;
- and
- processing the second signals received at the first reception antenna and the second signals received at the second reception antenna as a second SIMO system;
- wherein the data comprises one or more data portions;
- wherein receiving the signals transmitted from the first and second transmission antennas comprises, for each data portion, receiving at least one first symbol using a respective one of the one or more first subcarriers transmitted from the first transmission antenna, and receiving at least one second symbol transmitted using a respective one of the one or more second subcarriers from the second transmission antenna;
- and
- wherein the first symbol and the second symbol are identical.
8 more elements
A non-transitory computer readable recording medium storing a computer program product for controlling a transmitter, the computer program product comprising program instructions which, when run on processing circuitry of the transmitter, causes the transmitter to:
- forming the first signals by encoding portions of the data according to a first encoding scheme to form first encoded data, mapping the first encoded data to first symbols according to a first modulation scheme, and performing an inverse discrete Fourier transform and multiplication by a complex waveform on the first symbols to form the first signals;
- forming the second signals by encoding portions of the data according to a second encoding scheme to form second encoded data, mapping the second encoded data to second symbols according to a second modulation scheme, and performing an inverse discrete Fourier transform and multiplication by a complex waveform on the second symbols to form the second signals;
- transmit signals using one or more first subcarriers only from a first antenna, wherein the signals transmitted from the first antenna comprise first signals based on data;
- and
- transmit signals using one or more second subcarriers different from the one or more first subcarriers only from a second antenna, wherein the signals transmitted from the second antenna comprise second signals based on the data;
- wherein the data comprises one or more data portions;
- and
- wherein transmitting the signals from the first and second antennas comprises, for each data portion, transmitting at least one first symbol using a respective one of the one or more first subcarriers from the first antenna, and transmitting at least one second symbol using a respective one of the one or more second subcarriers from the second antenna;
- and
- wherein the first symbol and the second symbol are identical.
7 more elements
A non-transitory computer readable recording medium storing a computer program product for controlling a receiver, the computer program product comprising program instructions which, when run on processing circuitry of the receiver, causes the receiver to:
- receive, at a first reception antenna, signals transmitted using one or more first subcarriers only from a first transmission antenna, wherein the signals transmitted from the first transmission antenna comprise first signals based on data;
- and
- receive, at the first reception antenna, signals transmitted using one or more second subcarriers different from the one or more first subcarriers only from a second transmission antenna, wherein the signals transmitted from the second transmission antenna comprise second signals based on the data;
- receive, at a second reception antenna, the first signals and the second signals;
- process the first signals received at the first reception antenna and the first signals received at the second reception antenna as a first single input, multiple output (SIMO) system;
- and
- process the second signals received at the first reception antenna and the second signals received at the second reception antenna as a second SIMO system;
- wherein the data comprises one or more data portions;
- wherein receiving the signals transmitted from the first and second transmission antennas comprises, for each data portion, receiving at least one first symbol using a respective one of the one or more first subcarriers transmitted from the first transmission antenna, and receiving at least one second symbol transmitted using a respective one of the one or more second subcarriers from the second transmission antenna;
- and
- wherein the first symbol and the second symbol are identical.
8 more elements
An apparatus for transmitting signals, the apparatus comprising:
- processing circuitry;
- memory containing instructions executable by the processing circuitry whereby the apparatus is operative to:
- form first signals based on data by encoding portions of the data according to a first encoding scheme to form first encoded data, map the first encoded data to first symbols according to a first modulation scheme, and perform an inverse discrete Fourier transform and multiplication by a complex waveform on the first symbols to form the first signals;
- form second signals based on data by encoding portions of the data according to a second encoding scheme to form second encoded data, map the second encoded data to second symbols according to a second modulation scheme, and perform an inverse discrete Fourier transform and multiplication by a complex waveform on the second symbols to form the second signals;
- transmit signals using one or more first subcarriers only from a first antenna, wherein the signals transmitted from the first antenna comprise first signals based on data;
- and
- transmit signals using one or more second subcarriers different from the one or more first subcarriers only from a second antenna, wherein the signals transmitted from the second antenna comprise second signals based on the data;
- wherein the data comprises one or more data portions;
- wherein the transmitting the signals from the first and second antennas comprises, for each data portion, transmitting at least one first symbol using a respective one of the one or more first subcarriers from the first antenna, and transmitting at least one second symbol using a respective one of the one or more second subcarriers from the second antenna;
- and
- wherein the first symbol and the second symbol are identical.
8 more elements
An apparatus for receiving signals, the apparatus comprising:
- processing circuitry;
- memory containing instructions executable by the processing circuitry whereby the apparatus is operative to:
- receive, at a first reception antenna, signals transmitted using one or more first subcarriers only from a first transmission antenna, wherein the signals transmitted from the first transmission antenna comprise first signals based on data;
- receive, at the first reception antenna, signals transmitted using one or more second subcarriers different from the one or more first subcarriers only from a second transmission antenna, wherein the signals transmitted from the second transmission antenna comprise second signals based on the data;
- receive, at a second reception antenna, the first signals and the second signals;
- process the first signals received at the first reception antenna and the first signals received at the second reception antenna as a first single input, multiple output (SIMO) system;
- and
- process the second signals received at the first reception antenna and the second signals received at the second reception antenna as a second SIMO system;
- wherein the data comprises one or more data portions;
- wherein receiving the signals transmitted from the first and second transmission antennas comprises, for each data portion, receiving at least one first symbol using a respective one of the one or more first subcarriers transmitted from the first transmission antenna, and receiving at least one second symbol transmitted using a respective one of the one or more second subcarriers from the second transmission antenna;
- and
- wherein the first symbol and the second symbol are identical.
9 more elements
Dependencies are inferred from the claim text.